Analysis of patient＇s materials like cells or nucleic acids obtained in a minimally invasive or noninvasive manner through the sampling of blood or other body fluids serves as liquid biopsies, which has huge potentia...Analysis of patient＇s materials like cells or nucleic acids obtained in a minimally invasive or noninvasive manner through the sampling of blood or other body fluids serves as liquid biopsies, which has huge potential for numerous diagnostic applications. Circulating cell-free DNA（cfDNA） is explored as a prognostic or predictive marker of liquid biopsies with the improvements in genomic and molecular methods. DNA methylation is an important epigenetic marker known to affect gene expression. cfDNA methylation detection is a very promising approach as abnormal distribution of DNA methylation is one of the hallmarks of many cancers and methylation changes occur early during carcinogenesis. This re？view summarizes the various investigational applications of cfDNA methylation and its oxidized de？rivatives as biomarkers for cancer diagnosis, prenatal diagnosis and organ transplantation monitoring.The review also provides a brief overview of the technologies for cfDNA methylation analysis based on next generation sequencing.展开更多
基金supported by grants from the National Basic Research Program of China(MOST2016YFC0900301 and 2014CB964900)the National Natural Science Foundation of China(No. 91519325)the Beijing Natural Science Foundation (No. 5162012)
文摘Analysis of patient＇s materials like cells or nucleic acids obtained in a minimally invasive or noninvasive manner through the sampling of blood or other body fluids serves as liquid biopsies, which has huge potential for numerous diagnostic applications. Circulating cell-free DNA（cfDNA） is explored as a prognostic or predictive marker of liquid biopsies with the improvements in genomic and molecular methods. DNA methylation is an important epigenetic marker known to affect gene expression. cfDNA methylation detection is a very promising approach as abnormal distribution of DNA methylation is one of the hallmarks of many cancers and methylation changes occur early during carcinogenesis. This re？view summarizes the various investigational applications of cfDNA methylation and its oxidized de？rivatives as biomarkers for cancer diagnosis, prenatal diagnosis and organ transplantation monitoring.The review also provides a brief overview of the technologies for cfDNA methylation analysis based on next generation sequencing.
